Message 30039 in LORA.WW
From: HP2DFA
Date: Mon, 14 Sep 26 16:28:00 Z
Newsgroups: LORA.WW
Subject: LORA STATISTIC CENTRAL AMERICA SEP 7-13
Message-ID: <1981_HP2DFA>
Path: N2MH4|VE3KPG|GB7CIP|VK7AX|VK4OT|VK3AT|PY2BIL|HP2DFA
R:260914/1943Z 37191@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260914/1943Z 914@VE3KPG.#ECON.ON.CAN.NOAM BPQ6.0.25
R:260914/1942Z @:GB7CIP.#32.GBR.EURO #:5120 [Caterham Surrey GBR] $:1981_HP2DFA
R:260914/1941Z 17549@VK7AX.#ULV.TAS.AUS.AUNZ LinBPQ6.0.24
R:260914/1941Z 3881@VK4OT.#NQ.QLD.AUS.AUNZ LinBPQ6.0.25
R:260914/1941Z 33662@VK3AT.#MEL.VIC.AUS.OC LinBPQ6.0.24
R:260914/1938Z 54233@PY2BIL.SP.BRA.SOAM LinBPQ6.0.25
R:260914/1628Z 1981@HP2DFA.#COL.PAN.CEAM BPQ6.0.24
LoRa APRS operations across Central America (ITU Region 2) rely on ultra-low-power Chirp Spread Spectrum (CSS) modulation running primarily on **433.775 MHz** (70cm band) and **915.000 MHz** (33cm band, popular for Meshtastic/LoRa hybrid trackers).
Unlike traditional 1200 baud AFSK 2m VHF APRS, Central America's LoRa APRS deployment consists of compact, low-cost micro-gateways (such as LilyGO TTGO T-Beam and ESP32 nodes) feeding the global **APRS-IS** and **lora-aprs.live** backbones.
---
**Weekly Operational Summary (Estimated Snapshot)**
| Country / Region | Primary Frequency | Active LoRa iGates | Avg. Daily LoRa Beacons | Primary Hardware Setup |
| --- | --- | --- | --- | --- |
| **Costa Rica (TI)** | 433.775 MHz | 6 – 9 active | ~1,800 – 3,200 | ESP32 SX1278 (CA2RXU firmware), T-Beam trackers |
| **Panama (HP)** | 433.775 / 915.000 MHz | 4 – 7 active | ~1,200 – 2,100 | Solar fixed iGates (Panama City / Chiriquí corridor) |
| **Guatemala (TG)** | 433.775 MHz | 3 – 5 active | ~800 – 1,500 | High-elevation mountain nodes |
| **Honduras / El Salvador / Nicaragua** | 433.775 MHz | 2 – 4 active | ~400 – 900 | Experimental mobile trackers & fixed test nodes |
---
**Technical Protocol Profile**
* **Standard Modulation:** Spreading Factor `SF12`, Bandwidth `125 kHz`, Coding Rate `4/5` (standard LoRa APRS parameter set).
* **RF-to-IS Bridging:** iGates receive CSS RF packets locally and ingest them into APRS-IS using format headers matching destination callsigns like `APLGXX` or `APLRXX`.
* **Deployment Pattern:** Low-power (~100mW to 1W TX output) standalone nodes with battery/solar power deployed in dense urban sectors and along major highway routes.
73 de Omar HP2DFA from Colon Panama.
PMAIL: HP2DFA@HP2DFA.COL.PAN.CEAM
EMAIL: HP2DFA@GMAIL.COM
← Return to Bulletin List